how big is a googleplex Share with your friends Share 2 Lovina Kansal answered this Dear student A googolplex is the number 10, or equivalently, 1010100.Written out in ordinary decimal notation, it is followed by 10100 zeros,that is, a 1 followed by a googol of zeros. 1 View Full Answer Deep answered this You might know that a googol—the digit 1 followed by 100 zeroes—is a very largenumber indeed. You might even know that a googolplex—a 1 followed by a googolof zeros—is an even bigger number. 1